Determination of the relative influences of carbon doping and disorder on field and temperature dependent critical current density of MgB2

Determination of the relative influences of carbon doping and disorder on field and temperature dependent critical current density of MgB2

SiC was mixed with Mg and B and reacted by either a one-step in situ or two-step method at 650 or 850 °C. By doing so, it was possible to determine the extent to which scattering via C doping influences the magnitude of field dependent critical current density, Jc(H), compared to pinning via generat...

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Main Authors: Chen, Soo Kien, Xu, Xun, Kim, Jung Ho, Dou, Shi Xue, MacManus-Driscoll, Judith Louise
Format: Article
Language:English
Published: Institute of Physics Publishing 2009
Online Access:http://psasir.upm.edu.my/id/eprint/13965/
http://psasir.upm.edu.my/id/eprint/13965/
http://psasir.upm.edu.my/id/eprint/13965/1/Determination%20of%20the%20relative%20influences%20of%20carbon%20doping%20and%20disorder%20on%20field%20and%20temperature%20dependent%20critical%20current%20density%20of%20MgB2.pdf
id upm-13965
recordtype eprints
spelling upm-139652015-11-03T07:39:48Z http://psasir.upm.edu.my/id/eprint/13965/ Determination of the relative influences of carbon doping and disorder on field and temperature dependent critical current density of MgB2 Chen, Soo Kien Xu, Xun Kim, Jung Ho Dou, Shi Xue MacManus-Driscoll, Judith Louise SiC was mixed with Mg and B and reacted by either a one-step in situ or two-step method at 650 or 850 °C. By doing so, it was possible to determine the extent to which scattering via C doping influences the magnitude of field dependent critical current density, Jc(H), compared to pinning via generation of microstructural disorder. The one-step reaction method leads to Mg2Si formation and at the same time to more C doping of MgB2 than the two-step method. Carbon increases both the irreversibility field, Hirr, and upper critical field, Hc2 (T<28 K). However, for the temperatures (6 and 20 K) and fields (up to 7 T) studied, pinning rather than scattering overwhelmingly dominates the magnitude of the field dependent critical current density. Institute of Physics Publishing 2009-12 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/13965/1/Determination%20of%20the%20relative%20influences%20of%20carbon%20doping%20and%20disorder%20on%20field%20and%20temperature%20dependent%20critical%20current%20density%20of%20MgB2.pdf Chen, Soo Kien and Xu, Xun and Kim, Jung Ho and Dou, Shi Xue and MacManus-Driscoll, Judith Louise (2009) Determination of the relative influences of carbon doping and disorder on field and temperature dependent critical current density of MgB2. Superconductor Science and Technology, 22 (12). pp. 1-5. ISSN 0953-2048; ESSN: 1361-6668 10.1088/0953-2048/22/12/125005
repository_type Digital Repository
institution_category Local University
institution Universiti Putra Malaysia
building UPM Institutional Repository
collection Online Access
language English
description SiC was mixed with Mg and B and reacted by either a one-step in situ or two-step method at 650 or 850 °C. By doing so, it was possible to determine the extent to which scattering via C doping influences the magnitude of field dependent critical current density, Jc(H), compared to pinning via generation of microstructural disorder. The one-step reaction method leads to Mg2Si formation and at the same time to more C doping of MgB2 than the two-step method. Carbon increases both the irreversibility field, Hirr, and upper critical field, Hc2 (T<28 K). However, for the temperatures (6 and 20 K) and fields (up to 7 T) studied, pinning rather than scattering overwhelmingly dominates the magnitude of the field dependent critical current density.
format Article
author Chen, Soo Kien
Xu, Xun
Kim, Jung Ho
Dou, Shi Xue
MacManus-Driscoll, Judith Louise
spellingShingle Chen, Soo Kien
Xu, Xun
Kim, Jung Ho
Dou, Shi Xue
MacManus-Driscoll, Judith Louise
Determination of the relative influences of carbon doping and disorder on field and temperature dependent critical current density of MgB2
author_facet Chen, Soo Kien
Xu, Xun
Kim, Jung Ho
Dou, Shi Xue
MacManus-Driscoll, Judith Louise
author_sort Chen, Soo Kien
title Determination of the relative influences of carbon doping and disorder on field and temperature dependent critical current density of MgB2
title_short Determination of the relative influences of carbon doping and disorder on field and temperature dependent critical current density of MgB2
title_full Determination of the relative influences of carbon doping and disorder on field and temperature dependent critical current density of MgB2
title_fullStr Determination of the relative influences of carbon doping and disorder on field and temperature dependent critical current density of MgB2
title_full_unstemmed Determination of the relative influences of carbon doping and disorder on field and temperature dependent critical current density of MgB2
title_sort determination of the relative influences of carbon doping and disorder on field and temperature dependent critical current density of mgb2
publisher Institute of Physics Publishing
publishDate 2009
url http://psasir.upm.edu.my/id/eprint/13965/
http://psasir.upm.edu.my/id/eprint/13965/
http://psasir.upm.edu.my/id/eprint/13965/1/Determination%20of%20the%20relative%20influences%20of%20carbon%20doping%20and%20disorder%20on%20field%20and%20temperature%20dependent%20critical%20current%20density%20of%20MgB2.pdf
first_indexed 2018-09-07T13:27:54Z
last_indexed 2018-09-07T13:27:54Z
_version_ 1610955488549142528

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